The Challenge of Sky and Heaven is a contest held every ten years by Jalmeray’s three Houses of Perfection. It includes tests of knowledge, cunning, speed, martial arts, and skill. Kharswan, the nominal ruler of Jalmeray, also sponsors many additional events, including the Solemn Sky Duel of Masters. The Challenge is also open to any others who venerate Irori, and the winners receive a steel medallion of Sky and Heaven. The reigning champions are the Monastery of Untwisting Iron, who have won the last two Challenges.